Lipo batteries are volatile and can be explosive if damaged, They are also very expensive so protecting my investment and avoiding damage in a crash of my drone is the concept behind this design. It had to do the job but also be as light as possible and have ventilation to avoid overheating. This was printed on a Makerbot Replicator 2 without supports or special settings in PLA. This is an original design. The two higher sides on the longer part of the holder have a slot where a velcro strip is looped to help hold the battery in place. There is a recess in the rear the battery slips into to avoid any slipping around and facilitates quick and easy removal.